中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

526 records (took 0.037 seconds)

    Traffic light collision avoidance system
    71.
    发明授权
    Traffic light collision avoidance system 有权
    交通灯防撞系统

    公开(公告)号：US06281808B1

    公开(公告)日：2001-08-28

    申请号：US09444942

    申请日：1999-11-22

    Applicant: Michael T. Glier ,  Mark D. Laird ,  Michael T. Tinnemeier ,  Steven I. Small ,  Randall T. Sybel ,  Douglas L. Reilly

    Inventor： Michael T. Glier ,  Mark D. Laird ,  Michael T. Tinnemeier ,  Steven I. Small ,  Randall T. Sybel ,  Douglas L. Reilly

    IPC: G08G101

    CPC classification number: G08G1/054 ,  G07B15/06 ,  G08G1/0175 ,  G08G1/07 ,  G08G1/08 ,  G08G1/164 ,  Y10S707/99932 ,  Y10S707/99945 ,  Y10S707/99948

    Abstract: A collision avoidance system and method for a traffic intersection having a traffic light, which selectively extends the duration of a red light cycle to prevent traffic from entering the intersection during a red light violation. Output from one or more violation prediction image capturing devices is used to provide images showing one or more vehicles approaching the intersection. A violation prediction unit, which is also coupled to a signal reflecting a current light phase of the first traffic signal, receives and processes vehicle location information derived from the images to generate violation predictions for the vehicles approaching the intersection. The violation prediction indicates a likelihood that an associated vehicle will violate an upcoming red light phase of the traffic signal. In response to the violation prediction, a violation predicted signal is provided to a traffic signal controlling traffic intersecting with the predicted violator. That traffic signal then preempts a transition to a green light phase, thus extending a current red traffic light phase and thereby preventing traffic from entering the intersection during the predicted red light violation.

    Abstract translation: 一种具有交通灯的交通路口的防撞系统和方法，其选择性地延长红灯循环的持续时间，以防止红灯违规期间交通进入交叉路口。 使用来自一个或多个违规预测图像捕获装置的输出来提供示出接近交叉路口的一个或多个车辆的图像。 还耦合到反映第一交通信号灯的当前光相位的信号的违规预测单元接收并处理从图像导出的车辆位置信息，以生成接近交叉口的车辆的违规预测。 违规预测表明相关联的车辆将违反交通信号灯的即将到来的红灯阶段的可能性。 响应于违规预测，将违规预测信号提供给控制与预测违规者相交的交通信号的交通信号。 该交通信号然后抢占向绿灯阶段的过渡，从而延长当前的红色交通灯阶段，从而防止在预测的红光违规期间交通进入交叉路口。

    Traffic signal system and method
    72.
    发明授权
    Traffic signal system and method 失效
    交通信号系统及方法

    公开(公告)号：US5777564A

    公开(公告)日：1998-07-07

    申请号：US659275

    申请日：1996-06-06

    Applicant: Edward L. Jones

    Inventor： Edward L. Jones

    IPC: G08G1/08 ,  G08G1/017

    CPC classification number: G08G1/08

    Abstract: System and method for the improved operation of a traffic signal system which reduces delays to vehicular traffic at one or more signalized intersections by detecting vehicular demand for movement through each intersection. The present invention uses detectors for detecting vehicles entering an intersection, at a distance sufficiently great from the intersection, and for detecting vehicles leaving an intersection, at a distance sufficiently near to the intersection, to permit, when possible, one or more vehicles to proceed completely through the intersection prior to coming to a near, or complete stop. The system and method further facilitates accident reduction by monitoring portions of traffic lanes entering an intersection for vehicles, determining the probability of a vehicle being able to timely stop for a halt signal, and, if it is determined that the vehicle cannot timely stop for a halt signal, attempting to clear the intersection of other vehicles by setting all signals to halt.

    Abstract translation: 用于改进交通信号系统的操作的系统和方法，其通过检测通过每个交叉点的移动的车辆需求来减少在一个或多个信号交叉口处的车辆交通的延迟。 本发明使用检测器，用于检测进入交叉口的车辆距离交叉点足够大的距离，并且用于检测离足够靠近十字路口的距离离开交叉路口的车辆，以允许一个或多个车辆行驶 完全通过十字路口前来接近或完全停止。 该系统和方法进一步通过监视进入车辆十字路口的交通车道的部分，确定车辆能够及时停止停车信号的可能性，并且如果确定车辆不能及时停止 停止信号，试图通过设置所有信号停止来清除其他车辆。

    Method for predicting traffic space mean speed and traffic flow rate, and method and apparatus for controlling isolated traffic light signaling system through predicted traffic flow rate
    73.
    发明授权
    Method for predicting traffic space mean speed and traffic flow rate, and method and apparatus for controlling isolated traffic light signaling system through predicted traffic flow rate 失效
    预测交通空间平均速度和交通流量的方法，以及通过预测的交通流量控制隔离交通信号灯系统的方法和装置

    公开(公告)号：US5444442A

    公开(公告)日：1995-08-22

    申请号：US143119

    申请日：1993-10-29

    Applicant: Mareo Sadakata ,  Yoichiro Iwasaki ,  Yoshiharu Yano ,  Masakazu Toyama

    Inventor： Mareo Sadakata ,  Yoichiro Iwasaki ,  Yoshiharu Yano ,  Masakazu Toyama

    IPC: G08G1/00 ,  G08G1/01 ,  G08G1/04 ,  G08G1/08 ,  G08G1/07

    CPC classification number: G08G1/08

    Abstract: A method for predicting a traffic flow rate at a point on a road to control a traffic light signaling system measures a traffic density on the road to predict a traffic flow rate by utilizing the fact that a velocity of a vehicle on the road is restricted by an interval between successive vehicles, since the traffic density is locally increased when the vehicle interval is not uniform and therefore the spatial mean speed is lowered. This method offers higher accuracy by utilizing a correction coefficient obtained from an actual vehicle distribution, for instance, a coefficient derived from entropy. An apparatus for controlling a traffic light signaling system installed on a point of a road by utilizing this predicting method, thereby smoothing a traffic condition, includes video cameras for picking up images of a traffic condition at an upper stream of an intersection, an A/D converter for converting an analog video output signal into a digital video signal, two sets of image memories for storing digital image data about two scenes imaged by the video cameras at a proper time interval, an image processing unit for extracting moving objects from the images, a data process/control unit for calculating a total number of vehicles within a predetermined area and each space headway, whereby a vehicle distribution pattern is recognized an a correction coefficient is calculated, and an input/output unit for interfacing with the traffic light signaling system installed on the road.

    Abstract translation: 一种用于预测道路上某点的交通流量以控制交通信号灯信号系统的方法，通过利用道路上的车辆速度受到限制的事实来测量道路上的交通密度以预测交通流量 连续车辆之间的间隔，因为当车辆间隔不均匀且因此空间平均速度降低时交通密度局部增加。 该方法通过利用从实际车辆分布获得的校正系数（例如，从熵导出的系数）提供更高的精度。 一种用于通过利用该预测方法来控制安装在道路点上的交通信号灯系统的设备，从而平滑交通状况，包括用于拾取交叉路口上游交通状况图像的摄像机，A / D转换器，用于将模拟视频输出信号转换为数字视频信号;两组图像存储器，用于存储关于由摄像机以适当的时间间隔成像的两个场景的数字图像数据;图像处理单元，用于从图像中提取运动对象 数据处理/控制单元，用于计算预定区域内的车辆总数和每个空间前进距离，由此车辆分配模式被识别为校正系数;以及输入/输出单元，用于与交通信号灯信号 系统安装在路上。

    Advance call system for vehicular traffic control
    75.
    发明授权
    Advance call system for vehicular traffic control 失效
    用于车辆通行控制的预警呼叫系统

    公开(公告)号：US3739332A

    公开(公告)日：1973-06-12

    申请号：US3739332D

    申请日：1971-07-08

    Applicant: MARTINEZ R

    Inventor： MARTINEZ R

    IPC: G08G1/08

    CPC classification number: G08G1/08

    Abstract: A vehicle moving along a traffic lane towards a light controlled intersection is sensed by a first vehicle detector at a location remote from the intersection, and an ''''advance call'''' signal is generated by the first vehicle detector. The advance call signal is impressed immediately upon a traffic controller, and a capacitor or other storage means continues to hold the signal until the vehicle is sensed by a second or principal vehicle detector located close to the intersection. The traffic lights are thereby changed to green in advance of the vehicle approaching the intersection, such that the vehicle need not stop or slow down unduly. In the event that other traffic exists that might conflict with the vehicle, call signals from vehicle detectors of conflicting phases of the controller will inhibit the advance call signal causing the controller to operate in a normal mode without the advance call signal. Where a street or highway has two or more spaced apart intersections, a vehicle detector may serve in a dual capacity of providing a call signal for the controller of the first intersection and an advance call signal for the controller of the next intersection.

    Abstract translation: 沿着行车道朝向轻的交叉路口行驶的车辆由远离交叉口的位置处的第一车辆检测器检测，并且由第一车辆检测器产生“提前呼叫”信号。 提前呼叫信号立即压在交通控制器上，并且电容器或其他存储装置继续保持信号，直到车辆被位于靠近十字路口的第二或主要车辆检测器感测到。 因此，在车辆接近十字路口之前，交通信号灯被改变为绿色，使得车辆不必不适当地停止或减慢。 在存在可能与车辆冲突的其他交通事件的情况下，来自控制器冲突相位的车辆检测器的呼叫信号将阻止提前呼叫信号，使得控制器在没有提前呼叫信号的情况下以正常模式操作。 在街道或高速公路具有两个或更多间隔开的交叉路口的情况下，车辆检测器可以以提供第一交叉路口的控制器的呼叫信号和下一交叉路口的控制器的提前呼叫信号的双重能力来服务。

    Gap reduction through use of detectors
    76.
    发明授权
    Gap reduction through use of detectors 失效
    通过使用检测器减少GAP

    公开(公告)号：US3613074A

    公开(公告)日：1971-10-12

    申请号：US3613074D

    申请日：1969-06-19

    Applicant: GULF & WESTERN INDUSTRIES

    Inventor： HILL FRANK W ,  HUPPERT WILLIAM W ,  VANDEMORE JAMES J

    IPC: G08G1/08

    CPC classification number: G08G1/08

    Abstract: There is disclosed an apparatus and method for controlling a traffic signal means for alternately allocating ''''go'''' and ''''stop'''' signals to at least a first and second conflicting traffic lane wherein the first traffic lane has vehicle detection means associated therewith for detecting vehicles in the first phase, the second traffic lane has at least a first and second detection means associated therewith for detecting vehicles in the second traffic lane, a first circuit means coupled to the vehicle detection means for developing a signal upon detection of a vehicle by the vehicle detection means; and, timing circuit means coupled to the first circuit means for deactivating the first detection means of the second traffic lane at a predetermined period of time after a signal is developed by the first circuit means in response to the detection of a vehicle by the vehicle detection means.

    Traffic signal control system
    77.
    发明授权
    Traffic signal control system 失效

    公开(公告)号：US3602880A

    公开(公告)日：1971-08-31

    申请号：US3602880D

    申请日：1968-02-08

    Applicant: OMRON TATEISI ELECTRONICS CO

    Inventor： UEDA HIROSI ,  NAKATANI HISAO

    IPC: G08G1/08

    CPC classification number: G08G1/08

    Abstract: A system for providing smooth traffic control at an intersection of two or more streets includes a detecting means for each street which comprises a combination of detectors and a signal generator which produce a first signal when a platoon has been detected on the street and a second signal which denotes the traffic volume on the street. The first and second signals from the detecting means are coupled to a logic means which also has inputs from the traffic signal green indicators for each street and a priority command signal. The logic means include a component circuit for each street. If a platoon is detected on one of the streets and the signal indication to that street is red, the corresponding component circuit applies a control signal to a controller to change the state of the traffic signal. If platoons coincide on at least two streets, a third circuit including a comparing means having the second signals coupled thereto inhibits the production of a control signal by the corresponding component circuit of the street having the lesser traffic volume. However, a fourth circuit always gives priority to one of the streets when a priority command signal is present, by inhibiting the production of the control signal by the corresponding component circuit of the street which does not have priority.

Patent Agency Ranking